| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a device which is provided with a baffle and which reduces the vibration of the baffle. <P>SOLUTION: A first converter, installed in the baffle, is connected acoustically to a listening area in a vehicle and is further provided with a first diaphragm connected acoustically to the cavity inside the vehicle. When a first input signal is applied to the first converter, the first diaphragm moves in a first direction and generates acoustic output accordingly. A second converter is mechanically connected to the first converter. The second converter is connected acoustically to the first diaphragm and is further provided with a second diaphragm which is acoustically connected to the listening area. When the second input signal is applied to the second converter, the second diaphragm moves in a second direction which is approximately opposite to the first direction, vibration transmitted to the baffle is reduced and the acoustic output is substantially maintained. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
